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Backed out changeset a53aa43ab5f4 for Windows build bustage on a CLOSED TREE

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--HG--
extra : rebase_source : d3a1aecd8882bc591898684c0a97f8929b7809a9
This commit is contained in:
Terrence Cole 2014-09-19 09:40:53 -07:00
parent 8d64e431d9
commit 38ff30f0e1
4 changed files with 53 additions and 241 deletions
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9
js/public/Utility.h
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@ -14,7 +14,6 @@
#include "mozilla/NullPtr.h"
#include "mozilla/Scoped.h"
#include "mozilla/TemplateLib.h"
#include "mozilla/UniquePtr.h"
#include <stdlib.h>
#include <string.h>
@ -627,14 +626,6 @@ namespace js {
typedef uint32_t HashNumber;
const unsigned HashNumberSizeBits = 32;
typedef mozilla::UniquePtr<char, JS::FreePolicy> UniqueChars;
static inline UniqueChars make_string_copy(const char* str)
{
JS_OOM_POSSIBLY_FAIL();
return UniqueChars(strdup(str));
}
namespace detail {
/*

189
js/src/gc/Statistics.cpp
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@ -7,7 +7,6 @@
#include "gc/Statistics.h"
#include "mozilla/PodOperations.h"
#include "mozilla/UniquePtr.h"
#include <ctype.h>
#include <stdarg.h>
@ -27,8 +26,8 @@ using namespace js::gcstats;
using mozilla::PodArrayZero;
/* Except for the first and last, slices of less than 10ms are not reported. */
static const int64_t SLICE_MIN_REPORT_TIME = 10 * PRMJ_USEC_PER_MSEC;
/* Except for the first and last, slices of less than 42ms are not reported. */
static const int64_t SLICE_MIN_REPORT_TIME = 42 * PRMJ_USEC_PER_MSEC;
class gcstats::StatisticsSerializer
{
@ -309,12 +308,12 @@ static const PhaseInfo phases[] = {
{ PHASE_SWEEP_SCRIPT, "Sweep Script", PHASE_SWEEP },
{ PHASE_SWEEP_SHAPE, "Sweep Shape", PHASE_SWEEP },
{ PHASE_SWEEP_JITCODE, "Sweep JIT code", PHASE_SWEEP },
{ PHASE_FINALIZE_END, "Finalize End Callback", PHASE_SWEEP },
{ PHASE_DESTROY, "Deallocate", PHASE_SWEEP },
{ PHASE_COMPACT, "Compact", PHASE_NO_PARENT },
{ PHASE_COMPACT_MOVE, "Compact Move", PHASE_COMPACT },
{ PHASE_COMPACT_UPDATE, "Compact Update", PHASE_COMPACT, },
{ PHASE_COMPACT_UPDATE_GRAY, "Compact Update Gray", PHASE_COMPACT_UPDATE, },
{ PHASE_FINALIZE_END, "Finalize End Callback", PHASE_SWEEP },
{ PHASE_DESTROY, "Deallocate", PHASE_SWEEP },
{ PHASE_GC_END, "End Callback", PHASE_NO_PARENT },
{ PHASE_LIMIT, nullptr, PHASE_NO_PARENT }
};
@ -371,7 +370,7 @@ Statistics::formatData(StatisticsSerializer &ss, uint64_t timestamp)
else
ss.appendString("Reason", ExplainReason(slices[0].reason));
ss.appendDecimal("Total Time", "ms", t(total));
ss.appendNumber("Zones Collected", "%d", "", zoneStats.collectedZoneCount);
ss.appendNumber("Zones Collected", "%d", "", zoneStats.collectedCount);
ss.appendNumber("Total Zones", "%d", "", zoneStats.zoneCount);
ss.appendNumber("Total Compartments", "%d", "", zoneStats.compartmentCount);
ss.appendNumber("Minor GCs", "%d", "", counts[STAT_MINOR_GC]);
@ -428,174 +427,6 @@ Statistics::formatData(StatisticsSerializer &ss, uint64_t timestamp)
return !ss.isOOM();
}
typedef Vector<UniqueChars, 8, SystemAllocPolicy> FragmentVector;
static UniqueChars
Join(const FragmentVector &fragments) {
size_t length = 0;
for (size_t i = 0; i < fragments.length(); ++i)
length += fragments[i] ? strlen(fragments[i].get()) : 0;
char *joined = js_pod_malloc<char>(length + 1);
joined[length] = '\0';
char *cursor = joined;
for (size_t i = 0; i < fragments.length(); ++i) {
if (fragments[i])
strcpy(cursor, fragments[i].get());
cursor += fragments[i] ? strlen(fragments[i].get()) : 0;
}
return UniqueChars(joined);
}
UniqueChars
Statistics::formatDescription()
{
int64_t sccTotal, sccLongest;
sccDurations(&sccTotal, &sccLongest);
double mmu20 = computeMMU(20 * PRMJ_USEC_PER_MSEC);
double mmu50 = computeMMU(50 * PRMJ_USEC_PER_MSEC);
const char *format =
"=================================================================\n\
Reason: %s\n\
Incremental: %s%s\n\
Zones Collected: %d of %d\n\
Compartments Collected: %d of %d\n\
MinorGCs since last GC: %d\n\
MMU 20ms:%.3f; 50ms:%.3f\n\
SCC Sweep Total (MaxPause): %.3fms (%.3fms)\n\
HeapSize: %.3f MiB\n\
Chunk Delta (magnitude): %+d (%d)\n\
";
char buffer[1024];
memset(buffer, 0, sizeof(buffer));
snprintf(buffer, sizeof(buffer), format,
ExplainReason(slices[0].reason),
nonincrementalReason ? "no - " : "yes", nonincrementalReason ? nonincrementalReason : "",
zoneStats.collectedZoneCount, zoneStats.zoneCount,
zoneStats.collectedCompartmentCount, zoneStats.compartmentCount,
counts[STAT_MINOR_GC],
mmu20, mmu50,
t(sccTotal), t(sccLongest),
double(preBytes) / 1024. / 1024.,
counts[STAT_NEW_CHUNK] - counts[STAT_DESTROY_CHUNK], counts[STAT_NEW_CHUNK] +
counts[STAT_DESTROY_CHUNK]);
return make_string_copy(buffer);
}
UniqueChars
Statistics::formatSliceDescription(unsigned i, const SliceData &slice)
{
const char *format =
"\
---- Slice %u ----\n\
Reason: %s\n\
Reset: %s%s\n\
Page Faults: %ld\n\
Pause: %.3fms (@ %.3fms)\n\
";
char buffer[1024];
memset(buffer, 0, sizeof(buffer));
snprintf(buffer, sizeof(buffer), format, i,
ExplainReason(slice.reason),
slice.resetReason ? "yes - " : "no", slice.resetReason ? slice.resetReason : "",
uint64_t(slice.endFaults - slice.startFaults),
t(slice.duration()), t(slice.start - slices[0].start));
return make_string_copy(buffer);
}
UniqueChars
Statistics::formatTotals()
{
int64_t total, longest;
gcDuration(&total, &longest);
const char *format =
"\
---- Totals ----\n\
Total Time: %.3f\n\
Max Pause: %.3f\n\
";
char buffer[1024];
memset(buffer, 0, sizeof(buffer));
snprintf(buffer, sizeof(buffer), format, t(total), t(longest));
return make_string_copy(buffer);
}
static int64_t
SumChildTimes(Phase phase, int64_t *phaseTimes)
{
int64_t total = 0;
for (unsigned i = 0; phases[i].name; i++) {
if (phases[i].parent == phase)
total += phaseTimes[phases[i].index];
}
return total;
}
UniqueChars
Statistics::formatPhaseTimes(int64_t *phaseTimes)
{
static const char *LevelToIndent[] = { "", " ", " ", " " };
FragmentVector fragments;
char buffer[128];
for (unsigned i = 0; phases[i].name; i++) {
unsigned level = 0;
unsigned current = i;
while (phases[current].parent != PHASE_NO_PARENT) {
current = phases[current].parent;
level++;
}
MOZ_ASSERT(level < 4);
int64_t ownTime = phaseTimes[phases[i].index];
int64_t childTime = SumChildTimes(Phase(i), phaseTimes);
if (ownTime > 0) {
// If we have children and large parts of the time spent in this
// phase are not accounted to specific children, report the difference
// so that it is more obvious that we are losing time somewhere.
if (childTime && ownTime - childTime > 50) {
snprintf(buffer, sizeof(buffer), " %s%s: %.3fms (unaccounted: %.3fms)\n",
LevelToIndent[level], phases[i].name, t(ownTime), t(ownTime - childTime));
} else {
snprintf(buffer, sizeof(buffer), " %s%s: %.3fms\n",
LevelToIndent[level], phases[i].name, t(ownTime));
}
if (!fragments.append(make_string_copy(buffer)))
return UniqueChars(nullptr);
}
}
return Join(fragments);
}
UniqueChars
Statistics::formatDetailedMessage()
{
FragmentVector fragments;
if (!fragments.append(formatDescription()))
return UniqueChars(nullptr);
if (slices.length() > 1) {
for (unsigned i = 0; i < slices.length(); i++) {
if (!fragments.append(formatSliceDescription(i, slices[i])))
return UniqueChars(nullptr);
if (!fragments.append(formatPhaseTimes(slices[i].phaseTimes)))
return UniqueChars(nullptr);
}
}
if (!fragments.append(formatTotals()))
return UniqueChars(nullptr);
if (!fragments.append(formatPhaseTimes(phaseTimes)))
return UniqueChars(nullptr);
return Join(fragments);
}
char16_t *
Statistics::formatMessage()
{
@ -691,9 +522,13 @@ void
Statistics::printStats()
{
if (fullFormat) {
UniqueChars msg = formatDetailedMessage();
if (msg)
fprintf(fp, "GC(T+%.3fs) %s\n", t(slices[0].start - startupTime) / 1000.0, msg.get());
StatisticsSerializer ss(StatisticsSerializer::AsText);
formatData(ss, 0);
char *msg = ss.finishCString();
if (msg) {
fprintf(fp, "GC(T+%.3fs) %s\n", t(slices[0].start - startupTime) / 1000.0, msg);
js_free(msg);
}
} else {
int64_t total, longest;
gcDuration(&total, &longest);

22
js/src/gc/Statistics.h
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@ -9,7 +9,6 @@
#include "mozilla/DebugOnly.h"
#include "mozilla/PodOperations.h"
#include "mozilla/UniquePtr.h"
#include "jsalloc.h"
#include "jspubtd.h"
@ -60,12 +59,12 @@ enum Phase {
PHASE_SWEEP_SCRIPT,
PHASE_SWEEP_SHAPE,
PHASE_SWEEP_JITCODE,
PHASE_FINALIZE_END,
PHASE_DESTROY,
PHASE_COMPACT,
PHASE_COMPACT_MOVE,
PHASE_COMPACT_UPDATE,
PHASE_COMPACT_UPDATE_GRAY,
PHASE_FINALIZE_END,
PHASE_DESTROY,
PHASE_GC_END,
PHASE_LIMIT
@ -84,22 +83,17 @@ class StatisticsSerializer;
struct ZoneGCStats
{
/* Number of zones collected in this GC. */
int collectedZoneCount;
int collectedCount;
/* Total number of zones in the Runtime at the start of this GC. */
int zoneCount;
/* Total number of comaprtments in all zones collected. */
int collectedCompartmentCount;
/* Total number of compartments in the Runtime at the start of this GC. */
int compartmentCount;
bool isCollectingAllZones() const { return collectedZoneCount == zoneCount; }
bool isCollectingAllZones() const { return collectedCount == zoneCount; }
ZoneGCStats()
: collectedZoneCount(0), zoneCount(0), collectedCompartmentCount(0), compartmentCount(0)
{}
ZoneGCStats() : collectedCount(0), zoneCount(0), compartmentCount(0) {}
};
struct Statistics
@ -126,7 +120,6 @@ struct Statistics
char16_t *formatMessage();
char16_t *formatJSON(uint64_t timestamp);
UniqueChars formatDetailedMessage();
JS::GCSliceCallback setSliceCallback(JS::GCSliceCallback callback);
@ -207,11 +200,6 @@ struct Statistics
void printStats();
bool formatData(StatisticsSerializer &ss, uint64_t timestamp);
UniqueChars formatDescription();
UniqueChars formatSliceDescription(unsigned i, const SliceData &slice);
UniqueChars formatTotals();
UniqueChars formatPhaseTimes(int64_t *phaseTimes);
double computeMMU(int64_t resolution);
};

6
js/src/jsgc.cpp
View File

@ -5637,10 +5637,8 @@ GCRuntime::scanZonesBeforeGC()
zone->scheduleGC();
zoneStats.zoneCount++;
if (zone->isGCScheduled()) {
zoneStats.collectedZoneCount++;
zoneStats.collectedCompartmentCount += zone->compartments.length();
}
if (zone->isGCScheduled())
zoneStats.collectedCount++;
}
for (CompartmentsIter c(rt, WithAtoms); !c.done(); c.next())